Who knows, maybe they are planning to make Lordaeron a 4.0.6 Cata realm, so the lordaeron project can keep going
(progressive realm, that once had the players stuck at level 60, then outlands map opened and level stuck at 70, then northrend open and Naxx/Malygos/Obsidian Sanctum as their final raids, then Ulduar, TOC, and now ICC and RS live)
Like, the next logical step would be Cata 4.0.6 with Blackwing Descent, Bastion of Twilight...
Maybe doing what they did back in the days when Moltem had 6 wotlk realms, and transformed 3 of them into Cata realms: allowing character transfers from people that still wants to play wotlk, to another realm that is staying as wotlk, and for the remaining characters on the realm, make them all to be on a new 'fresh' progressive Cata realm ....